Yarn-clearer.



G. N. GHILDS.

YARN OLEARER.

' APPLICATION TILED JUNE 16, 1911.

Patented May 21, 1912.

Z I NVE N TO 1? WWW 14 I5 II Fl c.| WITNE8SES m CLARENCE N. CHILDS, OFLOWELL, MASSACHUSETTS.

YARN-CLEARER.

Specification of Letters Patent.

Application filed June 16, 1911.

Patented May 21, 1912.

Serial No. 633,506.

To all whom it may concern:

Be it known that I, CLARENCE N. Crimes, of Lowell, in the county ofMiddlesex and the Commonwealth of Massachusetts, have inevented acertain new and useful Improvement in Yarn-Glearers, of which thefollowing description and claims, with the accompanying drawing, is aspecification.

This invention is an improvement in that class of yarn clearers in whicha movable slub-detector cooperates with a yarn-grip- It consistsessentially in the said detector in trigger-engagement with the gripper.

It also consists in certain details of construction and in arrangementsand combinations thereof with other parts.

In the drawing, which shows my invention only in its preferred form:-Figure 1, is a side-elevation; Fig. 2 is an end-elevation; Fig. 3 is aplan; Figs. 4 and 5 show the movable slub-detector in side-elevation andplan, respectively; Figs. (3 and 7 show the movable member of theyarn-gripper in side-elevation and plan, respectively.

In the description and claims the term slub will be employed to denoteany enlargement of the yarn, such as a large knot, a double bunch offiber incorporated therein or the like.

In the figures: 1 is the supporting-rod for a series of clearers; 2 isthe supportingstand; 3 is the clamp for the stand; 4 is the stud,secured in the stand 2, upon which the slub-detector is pivotallymounted; 5 is the detector-block, to which the other I parts of theslub-detector are fastened; 6

is the yarn-gage, fastened to the block by the screw 7 and by the screw8 for adjusting and holding the gage; 9 is the cam, integral with theblock and carrying the triggers or stops 10 and 11 at its outer end forsetting the movable jaw of the yarn-gripper; 12 is the movable jaw ofthe yarngripper, pivotally mounted upon the stud 13 secured in the stand2, in trigger-engagement with the slub-detector through thedetector-triggers 10 and 11 and the grippertriggers 14 and 15, having agripping-face 16, and carrying a weight 20 for automatically operatingthe jaw when the detector moves out of engagement therewith; 17 is thegripping-face of the stationary jaw of the yarn-gripper, the stationaryjaw being integral with the stand 2; 18 is a yarnguiding stud fastenedadjustably in the stand 2; 19 is the yarn, moving in the directions ofthe arrowheads thereon.

When the slub-detector is located as in Fig. 1, it can rotate through apart of a right-handed rotation but it is held almost at the limit ofits left-handed rotation by the engagement of the triggers 10 and 14:.If the weight 20 is slightly raised, the detector will move to the limitof its lefthanded rotation and the block 5 will contact with the stand2. The slub-detector is so counterweighted that it tends to make a lefthanded rotation as seen in Fig. 1. When the moving yarn carries a slubwhich cannot pass with suflicient freedom through the yarn-gage 6, theslubwill catch in the slit of the gage and the yarn-pull will quicklyrotate the detector about the stud 1 until the trigger 10 shall contactwith the jaw 12. As soon as the detector-triggers 10 and 11 have movedout of contact with the gripper-triggers 1 1 and 15, the weight 20 willfall, the trigger 10 will strike the jaw 12,

and the yarn will be held fast between the gripper-jaws 16 and 17 Theslub-detector may be of one piece only or of many pieces. Eitherconstruction would be within my invention.

The movable gripping-jaw and its operating means may be of one pieceonly or of several pieces. Either construction would be within myinvention.

The motion of the slub-detector or of the gripper-jaw may be rectilinearor otherwise, instead of circular, and be within my invention. The cam 9and one of the triggers 10 or 11 can be omitted without departing frommy invention.

I claim:

1. In combination an automatic yarngripper normally tending to grip theyarn, and a movable slub-detector, normally in trigger-engagement withthe gripper while yarn without slubs is passing the detector but havingslub-actuated means for releasing such trigger-engagement.

2. In combination a Weight-actuated yarn-gripper normally tending togrip the yarn, and a movable slub-detector, normally intrigger-engagement with the gripper while yarn without slubs is passingthe detector but having slub-actuated means for releasing suchtrigger-engagement.

3. In combination a yarn-gripper having a movable jaw, and a movableShlb-dBtGCtOl', and means for operating the jaw hen the comprising amovable detector-block; a detector moves out ofengagement therewith. 10yarn-gage fastened to the block, and a cam In testimony whereof, I aflixmy signaintegral With the block and having a trigture in the presence oftWo Witnesses.

ger for engaging the jaw. CLARENCE N. GHILDS.

4. In combination a movable slub-deteo- WVitnesses: tor 1ntrigger-engagement With. a yarn-grlp- OHANNING WHITAKER, per, thegrlpper comprlslng a movable aW FRED Woonms.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

